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You add one side of each of the equations to form one side of the new equation. You add the other sides of the equations to form the other side.

Subtraction is done similarly.

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12y ago

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How do you know whether you should add or subtract when using the elimination method?

When using the elimination method to solve a system of equations, you should add the equations if doing so will eliminate one variable. This typically occurs when the coefficients of that variable are opposites (e.g., +2 and -2). Conversely, you should subtract the equations if their coefficients are the same, which will also help to eliminate that variable. Ultimately, the goal is to manipulate the equations to create a situation where one variable cancels out.


What can you do with abacus?

You can use an abacus to add and subtract quantities of beads by moving the them around. This can in turn help to solve equations involving counting numbers.


What is the opposite for add?

The opposite of add is subtract.


When solving a system by multiplying and then adding or subtracting how do you decide whether to add or subtract?

When solving a system of equations by multiplying and then adding or subtracting, you decide whether to add or subtract based on the coefficients of the variables you want to eliminate. If the coefficients of one variable are opposites (e.g., +3 and -3), you would add the equations to eliminate that variable. Conversely, if the coefficients are the same (e.g., +3 and +3), you would subtract one equation from the other to eliminate the variable. The goal is to simplify the system and isolate one variable for easier solving.


How do you add and subtract like denominator?

You add or subtract only the numerators

Related Questions

How do you evaluate linear equations involving addition and subtraction?

You add or subtract, as required by the equation!


How do you do simaltanues equations?

Equate the coefficients and subtract or add to find the value of the the given unknown variables.


How do you know whether you should add or subtract when using the elimination method?

When using the elimination method to solve a system of equations, you should add the equations if doing so will eliminate one variable. This typically occurs when the coefficients of that variable are opposites (e.g., +2 and -2). Conversely, you should subtract the equations if their coefficients are the same, which will also help to eliminate that variable. Ultimately, the goal is to manipulate the equations to create a situation where one variable cancels out.


Does decrease mean to add or subtract?

wich one


Are not steps for balancing chemical equations?

(Apex) C. Add all the elements togetherD. Subtract the total amount of elements from the products


How do you simplify exponential equations?

subtract


What can you do with abacus?

You can use an abacus to add and subtract quantities of beads by moving the them around. This can in turn help to solve equations involving counting numbers.


What two numbers equal 33 when you add them and 9 when you subtract them?

42


Does how many mean add or subtract?

does how many mean add or subtract


What are the steps in solving exponential equations?

multiply= you add the exponets together and keep the same base divide= you subtract the exponet and keep the base the same


What is the opposite for add?

The opposite of add is subtract.


Does how many more mean add or subtract?

it means to subtract